The primary role of a network engineer is to design, implement, and maintain communication networks within an organization. This encompasses local area networks (LAN), wide area networks (WAN), and other data communications systems. Network engineers are responsible for configuring hardware, such as routers and switches, and ensuring network security, reliability, and performance. Additionally, they troubleshoot network issues and optimize performance to align with organizational needs. Their expertise is crucial in facilitating seamless connectivity and information flow across the organization.